We look at the division of 169338 by 13 
The aim is to understand the frequency of 13 in 169338.

On to step 1:
When dividing 1 by 13, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 13

On to step 2:
13 can be fit into 16 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 13 from 16 and we're left with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 13

On to step 3:
The number 13 fits into 39 3 times, leaving a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we take 39 away from 39, we end up with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 13

Let's proceed to step 4:
13 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 130.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 13

Advancing to step 5:
The number 13 fits into 33 2 times, leaving a remainder of 7.
The next digit of our result is 2. 
Result so far: 1302.0
If we take 26 away from 33, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 13

Let's proceed to step 6:
If we divide 78 by 13, we get 6 and a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 13026.0
Deduct 78 from 78 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
13 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13026.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
0 divided by 13 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 13026.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 13026.0 with a remainder of 0.0.